Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.

50.0

31.1

14.5

58

21

16.3

61

761.3

29.97

1014.98

1014.98

771.3

30.37

1028.32

1028.32

0.5

0.02

0.67

0.67

90

Wind blowing from the east-southeast

Light air

(1 m/s)

(4 km/h)

(2 mph)

(2 knots)

(1 Bft)

50%.

5/10.

4 oktas

No Stratocumulus, Stratus, Cumulus or Cumulonimbus.

no clouds

no clouds

no clouds

2500 or more, or no clouds.

8202 or more, or no clouds.

No Altocumulus, Altostratus or Nimbostratus.

Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.

50.0

31.1

14.6

58

20

19.0

66

761.0

29.96

1014.58

1014.58

770.8

30.35

1027.65

1027.65

0.2

0.01

0.27

0.27

83

Wind blowing from the west

Light air

(1 m/s)

(4 km/h)

(2 mph)

(2 knots)

(1 Bft)

60%.

6/10.

5 oktas

25.8

78

No Stratocumulus, Stratus, Cumulus or Cumulonimbus.

no clouds

no clouds

no clouds

2500 or more, or no clouds.

8202 or more, or no clouds.

No Altocumulus, Altostratus or Nimbostratus.

Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.

50.0

31.1

16.1

61

No precipitation

No precipitation

12

19

22.0

72

760.9

29.96

1014.45

1014.45

770.7

30.34

1027.52

1027.52

-0.1

-0

-0.13

-0.13

72

Calm, no wind

Calm

16.8

62

18

24.8

77

760.8

29.95

1014.32

1014.32

770.5

30.33

1027.25

1027.25

-1.0

-0.04

-1.33

-1.33

59

Wind blowing from the north-east

Light air

(1 m/s)

(4 km/h)

(2 mph)

(2 knots)

(1 Bft)

16.3

61

17

25.4

78

760.8

29.95

1014.32

1014.32

770.5

30.33

1027.25

1027.25

-1.3

-0.05

-1.73

-1.73

52

Wind blowing from the north-east

Light breeze

(2 m/s)

(7 km/h)

(4 mph)

(4 knots)

(2 Bft)

14.9

59

16

26.0

79

761.0

29.96

1014.58

1014.58

770.7

30.34

1027.52

1027.52

-1.5

-0.06

-2

-2

49

Wind blowing from the north-east

Light breeze

(2 m/s)

(7 km/h)

(4 mph)

(4 knots)

(2 Bft)

14.5

58

15

25.8

78

761.8

29.99

1015.65

1015.65

771.4

30.37

1028.45

1028.45

-1.3

-0.05

-1.73

-1.73

49

Wind blowing from the north

Light air

(1 m/s)

(4 km/h)

(2 mph)

(2 knots)

(1 Bft)

90 or more, but not 100%

9/10 or more, but not 10/10

7 oktas or more, but not 8 oktas

Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.

50%.

5/10.

4 oktas

600-1000

1968-3281

No Altocumulus, Altostratus or Nimbostratus.

Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.

50.0

31.1

14.4

58

14

25.0

77

762.1

30

1016.05

1016.05

771.7

30.38

1028.85

1028.85

-1.2

-0.05

-1.6

-1.6

50

Wind blowing from the east-northeast

Light air

(1 m/s)

(4 km/h)

(2 mph)

(2 knots)

(1 Bft)

70 – 80%.

7/10 – 8/10.

6 oktas

Cumulus mediocris or congestus, with or without Cumulus of species fractus or humilis or Stratocumulus, all having their bases at the same level.

20–30%.

2/10–3/10.

2 oktas

1000-1500

3281-4921

Altocumulus translucidus in bands, or one or more layers of Altocumulus translucidus or opacus, progressively invading the sky; these Altocumulus clouds generally thicken as a whole.

Cirrus (often in bands) and Cirrostratus, or Cirrostratus alone, progressively invading the sky; they generally thicken as a whole; the continuous veil extends more than 45 degrees above the horizon, without the sky being totally covered.